Concrete test hammers are in use throughout the world for estimating strength of concrete by non-destructive means. Properly used, accuracies within 10-15% of actual compressive strength are attainable.

Spring impact energy is 0.225mkg (2.207N/m). Accuracy is comparable to test hammers selling for more than double its cost. The hammer is suitable for testing concrete of compressive strength between 1,500 to 8,000 psi (105 to 560kg/cm2 or 10 to 55MPa).